||Lyt"ta (l&ibreve;t"t&adot;), n.; pl. Lyttæ (-tē). [L., a worm said to grow under the tongue of dogs, and to cause canine madness, fr. Gr. ly`tta, ly`ssa, lit., madness.] (Anat.) A fibrous and muscular band lying within the longitudinal axis of the tongue in many mammals, as the dog.